You can contribute by submitting additional or updated information.
| Date: | Saturday 10 February 2024 |
| Time: | c. 23:55 UTC |
| Type: |  Boeing 777-3FXER |
| Owner/operator: | Etihad Airways |
| Registration: | A6-ETP |
| MSN: | 41699/1111 |
| Year of manufacture: | 2013 |
| Engine model: | General Electric GE90-115B |
| Fatalities: | Fatalities: 0 / Occupants: 365 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Muscat FIR -
 Oman
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Sydney-Kingsford Smith International Airport, NSW (SYD/YSSY) |
| Abu Dhabi International Airport (AUH/OMAA) | |
| Investigating agency: | OTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The serious incident involved Etihad Airways ETD455 aircraft with registration marks A6-
ETP, Boeing 777-300 (ER) and Qatar Airways aircraft QTR71N Registration marks A7-AHP,
Airbus 320.The aircraft entered Muscat Flight Information Region (FIR) as aircraft QTR71N
was maintaining FL350 flying on an easterly direction and reciprocal traffic aircraft ETD455
was maintaining FL340 flying on a westerly direction on (bidirectional) Airway P570 between
waypoints KITAL and GOLNI. Middle Sector Air Traffic Controller (ATCO) cleared aircraft
QTR71N to descend from FL350 to FL330 which is through the level of aircraft ETD455
maintaining FL340. At the time 23:55:39 UTC as aircraft QTR71N was descending through
FL341, with a rate of descent of 400 feet per minute (FPM) and aircraft ETD455 was main-
taining FL340, both aircraft were at FL340 head-on, with a closing distance of 7.38 NM be-
tween them, the Traffic Collision Avoidance System and Resolution Advisory TCAS-RA were
activated on both aircraft. By the time the controller instructed both the flight crew of aircraft
QTR71N and aircraft ETD455 to turn right 50 degrees to avoid the conflict, both flight crew
of aircraft QTR71N and aircraft ETD455 reported TCAS RA and applied the TCAS-RA avoid-
ance manoeuvre. The flight crew of aircraft ETD455 resumed FL340 once it was clear of
conflict and the flight crew of aircraft QTRN71 continued to descend to FL310 as instructed
by ATCO. Thereafter, both aircraft continued to their destinations and landed safely without
any further incident.
OTSB established that the probable cause of the incident was as result of the ATCO instruct-
ing the crew of aircraft QTR71N to descend from FL350 to FL330, while there was opposite
conflicting traffic from aircraft ETD455 which was maintaining FL 340, as a result both aircraft
received TCAS RA warning, and procedures were followed to avoid potential collision of both
aircraft.
Accident investigation:
 |
|
Sources:
https://www.mtcit.gov.om/ITAPortal/Data/SiteImgGallery/20241159107678/FINAL%20REPORT%20OTSB%20Case%20File%20No%20AIFN-002022024.pdf
https://www.jetphotos.com/photo/11377984 (Photo)
History of this aircraft
Other occurrences involving this aircraft
| 12 September 2021 | A6-ETP | Etihad Airways | 0 | Oman Airspace | |
min |
| 19 May 2023 | A6-ETP | Etihad Airways | 0 | Abu Dhabi International Airport (AUH/OMAA) |  |
min |
| Brake problem | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Jul-2025 16:05 | Justanormalperson | Added |
| 27-Jul-2025 16:05 | Justanormalperson | Updated [Category, ] |
| 27-Jul-2025 16:06 | Justanormalperson | Updated [Category, ] |
| 27-Jul-2025 16:06 | Justanormalperson | Updated [Accident report, ] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2025 Flight Safety Foundation